Monarch Mine

Past Producer in Elmore county in Idaho, United States with commodities Gold, Silver, Tungsten

Geologic information

Identification information

Deposit ID 10089044
MRDS ID W007882
MAS/MILS ID 0160390003
Record type Site
Current site name Monarch Mine

Geographic coordinates

Geographic coordinates: -115.11563, 43.77989 (WGS84)
Elevation 2134
Relative position 2 1/2 MI S OF ATLANTLA
(click for info)

Geographic areas

Country State County
United States Idaho Elmore

Public Land Survey System information

Meridian Township Range Section Fraction State
Boise 005N 011E 11 NE Idaho

Comments on the location information

  • At The Head Of Quartz Gulch ; Between Buffalo Discovery And Boise-Rochester

Commodities

Commodity Importance
Gold Primary
Silver Tertiary
Tungsten Tertiary

Materials information

Materials Type of material
Argentite Ore
Miargyrite Ore
Polybasite Ore
Pyrargyrite Ore
Silver Ore
Stephanite Ore
Pyrite Gangue
Quartz Gangue

Alteration

  • (Local) Oxidation , Gouge

Analytical data

Result $7.50 - $2000 AU, AG/TON. ANDERSON, 1939, REPORTS $7.25 AU AND AG/TON ASSAY FOR AVERAGE 7.5 FT ORE ZONE
Result 1 30-FT. WIDE CROSSCUT AVERAGED $20.80 AU AND $1.40 AG (BASED ON $20.67 AU). ORE ON 2 LOWER LEVELS AVERAGED $7.50/TON AU AND AG.

Host and associated rocks

  • Host or associated Associated
    Rock type Plutonic Rock > Porphyry > Lamprophyre
  • Host or associated Host
    Rock type Plutonic Rock > Granitoid > Quartz Monzonite
  • Host or associated Host
    Rock type Plutonic Rock > Mafic Intrusive Rock > Diorite
    Rock unit name Idaho Batholith;Idaho Batholith
    Rock description Idaho Batholith;Idaho Batholith

Nearby scientific data

(1) -115.11563, 43.77989

Ore body information

  • General form LENTICULAR
    Strike N 70 DEG E
    Dip NW
    Thickness 1.83M
    Depth to bottom 182.88M
    Depth to top 27.43M
    Width 30.48M
    Length 259.08M

Controls for ore emplacement

  • Fissures, Shear Zone

Comments on the geologic information

  • Lamprophyre Dike Strikes N 80 Deg E

Economic information

Economic information about the deposit and operations

Operation type Underground
Development status Past Producer
Commodity type Metallic
Deposit size Medium
Significant No
Discovery year 1863
Discovery method Ore-Mineral In Place
Year of first production 1865

Mining district

District name Atlanta District Or Middle Boise District

Land status

Ownership category Private

Comments on the production information

  • About $1,000,000 Total Production (To 1928). Total Produced Exceeds $2,000,000. Production Intermittent - 1865 - 1936

Workings at the site

  • Type of workings Underground
    Length 1280.16M
    Overall depth 182.88M

Comments on the workings information

  • Many Branches Of The Vein At Angles To The Ne Trend Have Approximately E - W Strike

Comments on development

  • 6 Patented Lode Claims, 5 Patented Mill - Sites, 3 Patented Placers, Plus Several Unpatented Claims, 5 - Stamp Mill. Amalgamation-Flotation Concentrator, Areal Tram 1.75 Mi. Long.

Reference information

Links to other databases

Agency Database name Acronym Record ID Notes
USGS Mineral Resources Data System MRDS W007882
Idaho Geological Survey Idaho Mines and Prospects IMP HA__69 http://www.idahogeology.org/
U.S. Bureau of Mines Minerals Availability System MAS 0160390003 data consolidated into this record

Bibliographic references

  • Deposit

    Ballard, S. M., 1928, Geology And Ore Deposits Of The Rocky Bar Quadrangle: Idaho Bureau Of Mines & Geol. Pam. 26, P. 31.

  • Deposit

    Anderson, A.L., 1939, Geology And Ore Deposits Of The Atlanta District, Elmore County, Idaho: Idaho Bureau Of Mines And Geology Pamphlet 49, 71 P.

  • Deposit

    1928 Geolmap Idaho Bureau Of Mines & Geol. Pam. 26

  • Deposit

    1939 Geolmap Idaho Bureau Of Mines And Geology Pamphlet 49

  • Production

    Ballard, S. M., 1928, Idaho Bureau Of Mines & Geol. Pam. 26, P. 31 ; Anderson, A.L., 1939, Idaho Bureau Of Mines And Geology Pamphlet 49, 71 P.

General comments

Subject category Comment text
Deposit Pettit And Dump Raise Veins Strike N 80 To 85 Deg W, Dip 80 Deg Sw.

Reporter information

Type Date Name Affiliation Comment
Reporter 01-OCT-1975 Steigner, William D. U.S. Geological Survey
Updater 01-AUG-1976 Everett, Sandra E. U.S. Geological Survey
Updater 01-FEB-1993 Frank, Dave U.S. Geological Survey
Reporter 01-MAR-1995 Western Field Operations Center (WFOC) U.S. Bureau of Mines